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Many soft contact lenses in US made up of PFAS, research suggests

theguardian.com

71–80 of 120 posts

Re: Many soft contact lenses in US made up of PFAS, research suggests

#71
post #5

Well then. LASIK it is.

You know glasses exist, right?

Depends. My nearsightness is so bad that even the insanely expensive ultra thin lenses are too heavy to wear for more than a few hours at a time and give me a raging headache from the weight. It's no exaggeration to say that contact lenses have had the single greatest positive effect on my life out of anything.

Re: Many soft contact lenses in US made up of PFAS, research suggests

#72
post #18

Earlier quoted context omitted.

we used to live malnourished, with stunted growth, women dying in childbirth to bring 8 kids into the world half of whom would die in childhood, with large numbers of men dying before they couldn't afford reading glasses they would need. (my gf was 1 of 5 surviving from 10 born, with horsedrawn transportation and starvation) all that industrialization brought us to much healthier longer lives filled with amenities un…

> we used to live malnourished, with stunted growth, women dying in childbirth to bring 8 kids into the world half of whom would die in childhood... > We're doing pretty well. You know it's interesting to think about who is doing well and who is not thanks to global industrialization. In the last 50 years "we" in the OECD countries simply moved our polluting industry to poor countries, where people have had their anc…

> "we" in the OECD countries simply moved our polluting industry to poor countries

Carbon intensity of GDP, worldwide, fell almost 40% between 1980 and 2021 [1]. (-1.3% CAGR.)

We do offshore toxic industries. But we're also getting better at being less toxic. Environmentalism isn't all a shell game.

[1] https://www.iea.org/data-and-statistics/charts/co2-emissions...

Re: Many soft contact lenses in US made up of PFAS, research suggests

#73
post #14

PFAS is to my generation as leaded gasoline is to the prior generation(s), and asbestos to the ones before them, and so forth from when the first chimneys were put up to spew toxic sludge into our air and rivers at the start of the industrial revolution. There is something so sad, so unworkable, and so deeply troubling about how this kind of thing keeps happening.

I think we're gonna have several asbestos/lead moments in our lifetimes. PFAS, micro plastics, endocrine disruption, I'd also wager marijuana is likely to have its own big tobacco moment eventually, I've heard fruits and vegetables have slowly been losing nutrient density over generations but I have not looked into that yet. There's more nebulous things like the impact of AI or the way we now communicate (or don't co…

Asbestos isn't even properly banned in US despite of universal knowledge of it being harmful: https://en.wikipedia.org/wiki/Asbestos#United_States

Re: Many soft contact lenses in US made up of PFAS, research suggests

#74
post #18

Earlier quoted context omitted.

we used to live malnourished, with stunted growth, women dying in childbirth to bring 8 kids into the world half of whom would die in childhood, with large numbers of men dying before they couldn't afford reading glasses they would need. (my gf was 1 of 5 surviving from 10 born, with horsedrawn transportation and starvation) all that industrialization brought us to much healthier longer lives filled with amenities un…

[flagged]

Every five years we have someone say we won't have glaciers in five years.

The more I see these kinds of sensationalist fearmongering, the more I am content to not give a damn.

Re: Many soft contact lenses in US made up of PFAS, research suggests

#75

This is a scare story - the original "research" The Guardian have linked to is an article by Mamavation which is the blog of Leah Segedie who "has a Masters degree from the University of Southern California in Communication Management". Leah found "Indications of PFAS", organic Fluorine, which may or may not be PFAS. Whilst she may not be wrong, as a wearer of contact lenses myself I would like to know the truth.

"extremely high levels of organic fluorine, a marker of ‘forever chemicals’"

I hate this kind of garbage research.

Florine can be used in lots of things, without actually checking there is absolutely no way they can claim it's PFAS.

Re: Many soft contact lenses in US made up of PFAS, research suggests

#76
post #67
post #61

Earlier quoted context omitted.

Also adopting asbestos were somewhat reasonable at that time (from thousands years ago to hundred year ago). Leaded gasoline was terrible from the beginning. They don't adopt ethanol for profit.

You’re confusing quite a few things here. Ethanol wasn’t put in gasoline until decades after the lead came out. Ethanol was absolutely added for profit… but much like HFCS, it was about propping up big agribusiness.

This is what I meant https://en.wikipedia.org/wiki/Charles_F._Kettering#Flxible,_...

Re: Many soft contact lenses in US made up of PFAS, research suggests

#77
post #49

Earlier quoted context omitted.

Or you just aren't doing sports / physical activities.

"the most extreme of conditions", so I'm not sure why you wouldn't think this includes sports or physical activities.

Can you link to some examples of such frames?

Re: Many soft contact lenses in US made up of PFAS, research suggests

#78

Earlier quoted context omitted.

"the most extreme of conditions", so I'm not sure why you wouldn't think this includes sports or physical activities.

Can you link to some examples of such frames?

Google "rimless titanium wire hingeless frame polycarb". You'll find plenty. As they're hingeless, you get far superior fit. They weigh much less than standard glasses, as such, they don't slip.

Re: Many soft contact lenses in US made up of PFAS, research suggests

#79
post #14

PFAS is to my generation as leaded gasoline is to the prior generation(s), and asbestos to the ones before them, and so forth from when the first chimneys were put up to spew toxic sludge into our air and rivers at the start of the industrial revolution. There is something so sad, so unworkable, and so deeply troubling about how this kind of thing keeps happening.

They were really pretty close. Leaded gas was banned for new model cars in 1985 but didn't stop being used until 1996 - the year of XML! - and asbestos was and is everywhere, the gift that keeps on giving. Popcorn ceiling in a house built in 1980 CA? Probably full of asbestos because grandfathered in. And so on.

Just kind of amazing.

Re: Many soft contact lenses in US made up of PFAS, research suggests

#80
post #67
post #61

Earlier quoted context omitted.

Also adopting asbestos were somewhat reasonable at that time (from thousands years ago to hundred year ago). Leaded gasoline was terrible from the beginning. They don't adopt ethanol for profit.

You’re confusing quite a few things here. Ethanol wasn’t put in gasoline until decades after the lead came out. Ethanol was absolutely added for profit… but much like HFCS, it was about propping up big agribusiness.

Ethanol replaced MBTE. MBTE is awful (any persistent groundwater contaminant is awful) and it's a good thing it's gone.

Higher percentages of ethanol are arguably not worthwhile, but getting rid of MBTE is almost certainly the right choice.

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